By Robert Pitt
Comprises serious layout instruments for useful implementation of strategies to manage and bog down run-off and sediment from building websites.
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Extra resources for Construction Site Erosion and Sediment Controls: Planning, Design, and Performance
A creative innovation to solve this problem is a partnership between the stormwater management program agency and the development community. This concept is being used in Delaware where the contractor or developer supplies their own inspectors. This person must attend and pass a State sponsored training course for inspectors. They are then responsible for inspecting the site at least once a week, completing an inspection form, and providing a copy of the Education of erosion control contractors is mandatory (Maryland DNR, Earl Shaver, photo).
Inspect all erosion and sediment controls and record all maintenance requirements such as verifying the integrity of barrier or diversion systems (earthen berms or silt fencing) and containment systems (sediment basins and sediment traps). Identify any evidence of rill or gully erosion occurring on slopes and any loss of stabilizing vegetation or seeding/mulching. Document in the site log book any excessive deposition of sediment or ponding water along barrier or diversion systems. Record the depth of sediment within containment structures, any erosion near outlet and overflow structures, and verify the ability of rock filters around perforated riser pipes to pass water.
Construction limit barriers may also need to be installed. Only when these controls are suitably installed should actual construction begin. Improperly located, designed, constructed, or maintained control devices produce little benefit. A common example of a poor location for a control device is the placement of filter fences in established waterways that drain large areas. Filter fences slow down water passing through them and create small detention areas. Particles then settle from the ponded water.